{Fire balloon}.
(a) A balloon raised in the air by the buoyancy of air
heated by a fire placed in the lower part.
(b) A balloon sent up at night with fireworks which ignite
at a regulated height. --Simmonds.

{Fire pot}.
(a) (Mil.) A small earthen pot filled with combustibles,
formerly used as a missile in war.
(b) The cast iron vessel which holds the fuel or fire in a
furnace.
(c) A crucible.
(d) A solderer's furnace.

{Fire raft}, a raft laden with combustibles, used for setting
fire to an enemy's ships.

{Fire roll}, a peculiar beat of the drum to summon men to
their quarters in case of fire.